Chinese Optical Fiber Stocks Slide; Huamai Technology Hits Limit Down

The breadth of the selloff—from limit-down Huamai to double-digit declines in Changyingtong and Uni-Trend, and 7%+ losses across larger names like Hengtong and Fiberhome—points to a sector-wide de-rating rather than a single-name issue. That matters for optical fiber as a proxy for telecom and AI-datacenter buildout sentiment, since these firms sit on the infrastructure side of that trade. The open question is whether this is a one-day volatile flush or the start of a sustained repricing; the absence of any company-specific catalyst in the item leaves the driver unclear.